Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Somerset's progression into December includes a drop in the average high-temperature, from a cool 53.8°F (12.1°C) in November to a frosty 44.1°F (6.7°C). Somerset experiences a mean low-temperature of 32.4°F (0.2°C) during December.Humidity
The average relative humidity in December in Somerset is 78%.Rainfall
In Somerset, Illinois, in December, it is raining for 10.3 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, there are 158.6 rainfall days, and 36.02" (915mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Somerset, in December, during 3.6 snowfall days, 1.18" (30mm) of snow is typically accumulated. In Somerset, during the entire year, snow falls for 17.7 days and aggregates up to 6.57" (167mm) of snow.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:50 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:08 am and sunset at 4:45 pm CST.
Sunshine
The average sunshine in December is 4.7h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In December, a daily UV index of 2 turns into the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Avoiding the Sun during its peak radiation time around midday is a healthy practice. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
Is December cold in Somerset?
What is the average humidity in December in Somerset?
How many days does it rain in December in Somerset?
How much does it snow in Somerset in December?
What is the month with the shortest days in Somerset?
What is the average length of the day in December in Somerset?
When is the sunrise / sunset in December in Somerset?
How many hours of sunshine does Somerset have in December?
What are the months with the lowest UV index in Somerset?
What is the UV index intensity in December in Somerset?
Average temperature in December
Somerset, IL
- Average high temperature in December: 44.1°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in December: 32.4°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).
Average pressure in December
Somerset, IL
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Somerset, IL
- Average wind speed in December: 8.8mph
The windiest months (with the highest average wind speed) are January and February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in December
Somerset, IL
- Average humidity in December: 78%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Somerset, IL
- Average rainfall in December: 2.8"
The wettest month (with the highest rainfall) is April (4.8").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in December
Somerset, IL
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in December
Somerset, IL
- Average snowfall in December: 1.18"
The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Somerset, IL
- Average snowfall days in December: 3.6 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Somerset, IL
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in December
Somerset, IL
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in December
Somerset, IL
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Somerset, IL
- Average cloud cover in December: 50
The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 28).
Average visibility in December
Somerset, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Somerset, Illinois, USA
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